Arknights

So far, all attempts at solidarity have proven useless. Even the combined forces of Kazimierz's Knight Orders and Leithanien's Gesatzswächters were unable to withstand the Seaborn tides for even a single day. By sacrificing their lives, the Emperor's Blades were able to hold the national defense line, but this only bought enough time for mankind's retreat. A few months later, the Seaborn adapted to the empire's traits and penetrated through the troublesome barrier, and humanity suddenly found themselves with no weapons they could rely on. Columbia's cutting-edge technology joined with Sami's ancient Arts to try to open up more avenues of retreat, while Great Yan and the remnants of the various countries' armies attempted to consolidate into mankind's final bastion. The soldiers are all united, manning the stronghold with a determination beyond death. For each extra day they stand, countless more lives can be saved. Until the last flag falls, until the last immovable Tianshi of Great Yan watches the distant ranks of civilians and meets his death in a brief yet near-eternal grief.